body {
  background: #f0f2f5;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  margin: 0;
  padding: 0;
}

/* 登录页面样式 */
.login-container {
  width: 350px;
  margin: 100px auto;
  padding: 32px 24px 24px 24px;
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
}

.login-container h1 {
  text-align: center;
  margin-bottom: 24px;
  color: #1890ff;
}

.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  margin-bottom: 6px;
  color: #333;
}

.form-group input {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid #d9d9d9;
  border-radius: 4px;
  font-size: 16px;
  box-sizing: border-box;
  transition: border-color 0.2s;
}

.form-group input:focus {
  border-color: #1890ff;
  outline: none;
}

.login-btn {
  width: 100%;
  padding: 10px 0;
  background: #1890ff;
  color: #fff;
  border: none;
  border-radius: 4px;
  font-size: 18px;
  cursor: pointer;
  transition: background 0.2s;
}

.login-btn:hover {
  background: #40a9ff;
}

/* 首页样式 */
.container {
  width: 400px;
  margin: 120px auto;
  background: #fff;
  border-radius: 10px;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
  padding: 40px 30px;
  text-align: center;
}

#loginUser {
  color: #1890ff;
  font-weight: bold;
  font-size: 20px;
}

.welcome {
  font-size: 22px;
  margin-bottom: 24px;
  color: #333;
}

.logout-btn {
  margin-top: 30px;
  padding: 8px 32px;
  background: #1890ff;
  color: #fff;
  border: none;
  border-radius: 4px;
  font-size: 16px;
  cursor: pointer;
  transition: background 0.2s;
}

.logout-btn:hover {
  background: #40a9ff;
}